retrofit does not accommodate requirements defined in manifest.yml [BUG]

[mattbathje]

Description

When converting a mycroft skill, if the python library requirements were defined in manifest.yml (instead of requirements.txt), they are not carried over into the requirements.txt file.

Steps to Reproduce

Using the --retrofit option, attempt to convert a mycroft skill that has python requirements defined in manifest.yml

Relevant Code

Example manifest.yml contents:

dependencies:
    python:
        - akinator
        - rapidfuzz

Other Notes

No response